Patents by Inventor Cornelia E. M. Bronsaer

Cornelia E. M. Bronsaer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for preparing a melt-processable polyamide composition
    Patent number: 8080630
    Abstract: The invention relates to a process for preparing a melt-processable polylactam by contacting caprolactam monomer with an anionic polymerization catalyst, polymerizing said monomer and contacting the resulting polylactam with a protic compound. The anionic polymerization catalyst is chosen from the group consisting of alkali-earth-metal-lactamates and alkali-earth-metal-lactamate forming compounds and the protic compound has a pKa larger than 14. The resulting polylactam has a good melt-stability and very low cyclic dimer content.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: December 20, 2011
    Assignee: DSM IP Assets B.V.
    Inventors: Albert A Van Geenen, Cornelia E. M. Bronsaer, Yvonne H Frentzen, Stanislaus M. P. Mutsers, Nicolaas J. M. L. Janssen